linux-kernel - Re: [RFC PATCH 0/1] Categorize ARM dts directory

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Message-ID: <45bc13a8-1442-2dd3-b9ea-1ed2f5962bac@arm.com>
Date:   Tue, 25 Apr 2023 17:21:30 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Daniel Palmer <daniel@...f.com>,
        Ansuel Smith <ansuelsmth@...il.com>,
        Claudiu Beznea <Claudiu.Beznea@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Santiago Esteban <Santiago.Esteban@...rochip.com>,
        Cristian Birsan <Cristian.Birsan@...rochip.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-actions@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-omap@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...s.com, linux-aspeed@...ts.ozlabs.org,
        linux-rpi-kernel@...ts.infradead.org,
        chrome-platform@...ts.linux.dev, linux-renesas-soc@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        kernel@...electronics.com, linux-mediatek@...ts.infradead.org,
        openbmc@...ts.ozlabs.org, linux-tegra@...r.kernel.org,
        linux-oxnas@...ups.io, linux-arm-msm@...r.kernel.org,
        linux-unisoc@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org,
        linux-realtek-soc@...ts.infradead.org
Subject: Re: [RFC PATCH 0/1] Categorize ARM dts directory

On 29/03/2022 9:50 am, Nicolas Ferre wrote:
> Ansuel, All,
> 
> On 28/03/2022 at 10:55, Daniel Palmer wrote:
>> Hi Ansuel
>>
>> On Mon, 28 Mar 2022 at 09:09, Ansuel Smith <ansuelsmth@...il.com> wrote:
>>>
>>> Hi,
>>> as the title say, the intention of this ""series"" is to finally 
>>> categorize
>>> the ARM dts directory in subdirectory for each oem.
>>
>> While I agree with this change and think it's for the good (browsing
>> the ARM dts directory at the moment is frustrating..) I think
>> buildroot and others need to be told about this as it'll potentially
>> break their kernel build scripting for ARM and probably messes up the
>> configs they have for existing boards.
> 
> This aspect mustn't be underestimated and I anticipate lots of issues 
> during a long time on this particular topic of "build systems".
> 
> Another aspect is CI and public or private testing farms we all have 
> running.

Yet another is if this affects what `make dtbs_install` does (I don't 
know for sure, but I'd be inclined to suspect it might). Some distros 
use that to deliver the DTBs as part of their kernel package, so if 
paths suddenly change it could break end users' bootloader setups too.

Thanks,
Robin.

> These aspects always refrained me to change anything in the naming 
> scheme of our DT files, but if we go in this direction, we must really 
> be prepared and I'm still not convince it's worth it...
> 
> 
> If this has to happen, I would also like to queue some file name changes 
> to do all modifications in one go in order to lower the annoyance level 
> of those who would need to adapt to those changes.
> 
> BTW, is there a common scheme for dts/dtsi file naming? Is it more 
> enforced in one way or another for arm64 in a sense that I can take some 
> norm as an example?
> 
> [..]
> 
> Best regards,
>    Nicolas
> 
> 
>